The present application relates to a composite electrolyte membrane and a method for manufacturing the same. The composite electrolyte membrane according to the present application includes: a poly(arylene ether sulfone) copolymer including the repeating unit represented by Chemical Formula 1 and the repeating unit represented by Chemical Formula 2; and a core-shell particle including an inorganic particle core and a basic organic polymer shell.

A non crosslinked, covalently crosslinked and/or ionically crosslinked polymer, having repeating units of the general formula (1)
KR(1)
In which K is a bond, oxygen, sulfur, ##STR00001##
the radical R is a divalent radical of an aromatic or heteroaromatic compound.

Described herein are crosslinked alkylated poly(benzimidazole) and poly(imidazole) polymer materials and devices (e.g., fuel cells, water electrolyzers) including these polymer materials. The polymer materials can be prepared in a convenient manner, allowing for applications such as anion exchange membranes (AEMs). The membranes provide high anion conductivities over a wider range of operating conditions when compared to the analogous membranes that are not cross-linked. The crosslinked polymer materials have improved alkaline stability, when compared to the analogous non-crosslinked polymer materials.

Disclosed herein are embodiments of compositions comprising polyols and cationic group-functionalized polyphenylene polymers suitable for use in electrochemical systems. The disclosed composition exhibit improved dispersion properties and further provide anion exchange polymer membranes exhibited improved chemical and mechanical properties. Also disclosed herein are methods of making and using the disclosed compositions.

A novel process for making PBI films starting from gel PBI membranes polymerized and cast in the PPA process wherein acid-imbibed gel PBIs are neutralized in a series of water baths and undergo controlled drying in association with a substrate material, yielding a PBI film without the use of organic solvents.

A block copolymer containing one or more segments containing an ionic group (hereinafter referred to as an ionic segment(s)) and one or more segments containing no ionic group (hereinafter referred to as a nonionic segment(s)), wherein at least one of the ionic segment or the nonionic segment contains: constituent units composed of an aromatic hydrocarbon polymer (hereinafter referred to as a constituent unit); and a first linker that links the constituent units with each other. A block copolymer and a polymer electrolyte material produced using the block copolymer are made feasible, in which the block copolymer can achieve high proton conductivity under low-humidity conditions, excellent mechanical strength and chemical stability, and enhanced in-process capability.

Provided is a polymer electrolyte article having high proton conductivity, mechanical strength, and chemical stability, wherein, for the average periodic distance in the phase-separated structure of the polymer electrolyte article observed by small-angle X-ray scattering, the average periodic distance in the atmosphere and the average periodic distance in water satisfy the following condition: (the average periodic distance in water)/(the average periodic distance in the atmosphere)?2.20.

Disclosed is an electrolyte membrane for a fuel cell including a polymer blend of a sulfonated polyethersulfone copolymer, hydroxyl group-containing polyethersulfone copolymer and a hydroxyl group-containing sulfonated polyethersulfone copolymer.

The present invention relates to a method for producing a polymer electrolyte molded article, which comprises forming a polymer electrolyte precursor having a protective group and an ionic group, and deprotecting at least a portion of protective groups contained in the resulting molded article to obtain a polymer electrolyte molded article. According to the present invention, it is possible to obtain a polymer electrolyte material and a polymer electrolyte molded article, which are excellent in proton conductivity and are also excellent in fuel barrier properties, mechanical strength, physical durability, resistance to hot water, resistance to hot methanol, processability and chemical stability. A polymer electrolyte fuel cell using a polymer electrolyte membrane, polymer electrolyte parts or a membrane electrode assembly can achieve high output, high energy density and long-term durability.

The present disclosure relates to a technique for manufacturing a self-humidifying membrane including a hydrophobic thin film-coating layer having a nano-sized crack morphology pattern on the surface of an aromatic hydrocarbon-based polymer ion exchange membrane and applying the membrane to a reverse electrodialysis process. The self-humidifying membrane including a hydrophobic thin film-coating layer having a nano-sized crack morphology pattern on the surface of an aromatic hydrocarbon-based polymer ion exchange membrane, manufactured according to the present disclosure, embodies a low bulk resistance of the ion exchange membrane and significantly improves ion selectivity, thereby overcoming the trade-off relationship between membrane resistance and ion selectivity, and thus may be commercially available as an anion and cation exchange membrane of a reverse electrodialysis device.